ChemElectroChem最新文献

Front Cover: (ChemElectroChem 23/2024)

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-12-02 DOI: 10.1002/celc.202482301

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Front Cover: Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER (ChemElectroChem 22/2024) 封面：碱性 OER 中阴离子钙化硼酸盐基镍铁 LDH 的电催化性能和动力学行为（ChemElectroChem 22/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-19 DOI: 10.1002/celc.202482201

Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits

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Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER 阴离子钝化硼酸盐基镍铁 LDH 在碱性 OER 中的电催化性能和动力学行为

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-19 DOI: 10.1002/celc.202400457

Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits

{"title":"Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER","authors":"Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits","doi":"10.1002/celc.202400457","DOIUrl":"https://doi.org/10.1002/celc.202400457","url":null,"abstract":"The synthesis of hydrogen via water electrolysis is an important step towards resolving the energy crisis and impeding global warming, as hydrogen can be used as a green energy carrier. The oxygen evolution as one half-cell reaction (OER) is currently limiting efficient water splitting due to kinetic inhibition as well as a complex mechanism, causing a large overpotential. Nickel-iron layered double hydroxides (LDH) were found to be suitable OER catalysts, as they are cost effective, stable and highly active. This work focuses on the intercalation of different organic and inorganic borates into the LDH interlayers to study their influence on OER. Besides activity and stability measurements, three borate candidates were chosen for a kinetic study, including steady-state Tafel analysis and reaction order plots. It was found that the Bockris pathway with the second step as rate-determining step was predominant for all three catalysts. Of all candidates, the intercalation of borate resulted in the highest performance, which was associated with a high reducibility affecting the active metal sites.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400457","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: High-performance Porous Electrodes for Flow Batteries: Improvements of Specific Surface Areas and Reaction Kinetics (ChemElectroChem 21/2024) 封面：用于液流电池的高性能多孔电极：比表面积和反应动力学的改进（ChemElectroChem 21/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-07 DOI: 10.1002/celc.202482101

Lyuming Pan, Zixiao Guo, Hucheng Li, Yilin Wang, Haoyao Rao, Qinping Jian, Jing Sun, Jiayou Ren, Zhenyu Wang, Bin Liu, Meisheng Han, Yubai Li, Xinzhuang Fan, Wenjia Li, Lei Wei

引用次数: 0

Cover Feature: Cost-Effective Solutions for Lithium-Ion Battery Manufacturing: Comparative Analysis of Olefine and Rubber-Based Alternative Binders for High-Energy Ni-Rich NCM Cathodes (ChemElectroChem 21/2024) 封面专题：锂离子电池制造的成本效益解决方案：用于高能量富镍 NCM 阴极的烯烃基和橡胶基替代粘合剂的比较分析（ChemElectroChem 21/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-07 DOI: 10.1002/celc.202482102

Susan Montes, Alexander Beutl, Andrea Paolella, Marcus Jahn, Artur Tron

引用次数: 0

Core-Shell Amorphous FePO4 as Cathode Material for Lithium-Ion and Sodium-Ion Batteries

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-06 DOI: 10.1002/celc.202400484

Peng Tang, John Prochest Kachenje, Xiaoping Qin, Huihui Li, Xiangdong Zeng, Haiyang Tian, Wei Cao, Ying Zhou, Di Heng, Shishi Yuan, Xun Jia, Xiaolong Zhang, Xiaoyu Zhao

{"title":"Core-Shell Amorphous FePO4 as Cathode Material for Lithium-Ion and Sodium-Ion Batteries","authors":"Peng Tang, John Prochest Kachenje, Xiaoping Qin, Huihui Li, Xiangdong Zeng, Haiyang Tian, Wei Cao, Ying Zhou, Di Heng, Shishi Yuan, Xun Jia, Xiaolong Zhang, Xiaoyu Zhao","doi":"10.1002/celc.202400484","DOIUrl":"https://doi.org/10.1002/celc.202400484","url":null,"abstract":"Amorphous FePO4 (AFP) is a promising cathode material for lithium-ion and sodium-ion batteries (LIBs & SIBs) due to its stability, high theoretical capacity, and cost-effective processing. However, challenges such as low electronic conductivity and volumetric changes seriously hinder its practical application. To overcome these hurdles, core-shell structure synthesis emerges as a useful solution. In this work, we for the first time made this comprehensive review on the progresses of core-shell amorphous FePO4 (CS-AFP). This review summarizes 1) various synthesis methods such as template method, microemulsion method, and other methods, 2) characterization techniques, and 3) their involvement in improving electrochemical performance in LIBs and SIBs. In terms of further understanding the underlying mechanisms of advancing electrochemical performance of CS-AFP, the future perspective on two main aspects were insighted: (i) in situ characterization and (ii) novel designs of materials and structure for CS-AFP.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400484","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PVDF and PEO Catholytes in Solid-State Cathodes Made by Conventional Slurry Casting 传统浆料浇铸法制造的固态阴极中的 PVDF 和 PEO 阴极

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400472

Benjamin R. Howell, Joshua W. Gallaway

{"title":"PVDF and PEO Catholytes in Solid-State Cathodes Made by Conventional Slurry Casting","authors":"Benjamin R. Howell, Joshua W. Gallaway","doi":"10.1002/celc.202400472","DOIUrl":"https://doi.org/10.1002/celc.202400472","url":null,"abstract":"All-solid-state Li batteries are desired for better safety and energy density than Li-ion batteries. However, the lack of a penetrating liquid electrolyte requires a much different approach to the design of cathodes. The solid catholyte must enable good Li+ conduction, form good interfaces with active material particles, and have the strength to bind the cathode together during repeated volume changes. Catholyte formulation is often simply adapted from Li-ion design principles, adding a Li salt to the PVDF binder. Here we show that such a PVDF binder at 10 wt % loading is a starved catholyte condition that compromises cell performance. By substituting a 70 : 30 blend of PVDF:PEO, performance is improved while maintaining nearly the same areal loading of LFP active material. Increasing the catholyte fraction to 16 % can also improve performance, but in this case the benefit of including PEO is lessened, with PVDF alone being an adequate catholyte. EIS analysis shows that PEO helps to form charge transfer interfaces at 10 % catholyte, but that its inclusion can degrade interfaces when there is ample catholyte at 16 %. It is also shown that catholyte agglomeration can impede bulk Li conduction, indicating that microstructural factors are of critical importance.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400472","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ex Situ Electro-Organic Synthesis – A Method for Unrestricted Reaction Control and New Options for Paired Electrolysis 原位电有机合成--不受限制的反应控制方法和配对电解的新选择

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400489

Helena Pletsch, Yang Lyu, Dominik P. Halter

{"title":"Ex Situ Electro-Organic Synthesis – A Method for Unrestricted Reaction Control and New Options for Paired Electrolysis","authors":"Helena Pletsch, Yang Lyu, Dominik P. Halter","doi":"10.1002/celc.202400489","DOIUrl":"https://doi.org/10.1002/celc.202400489","url":null,"abstract":"Classic in situ electro-organic synthesis with substrates in an electrolyzer must compromise process conditions to balance electro- and thermochemical steps at both electrodes. This often restricts efficiency and product selectivity, since requirements may deviate for electrochemical (catalyst activation) and chemical (organic synthesis) steps, as well as for paired anode- and cathode reactions. Breaking this barrier, we report ex situ electro-organic synthesis as a versatile method that enables unique product selectivity and unusual product pairs. We exemplify the concept for pairing H2 evolution (HER) with anodic alcohol oxidation. The two-step method accomplishes this by separating cathode reactions from organic substrate oxidation, and anodic electrocatalyst activation from chemical conversion of organic substrates in time and space. First, the electro-oxidation of Ni(OH)2 anodes to NiOOH is paired with H2 production by alkaline water electrolysis. Then, “charged” NiOOH electrodes are removed from the electrolyzer and used in external vessels to oxidize model substrate benzyl alcohol under regeneration of Ni(OH)2. Free choice of reaction media outside the electrolyzer allows to selectively obtain benzoic acid (in water) or benzaldehyde (in n-hexane), whereas classic in situ electrosynthesis only produces the acid together with H2. Perspectively, the method enables electrosynthesis of previously inaccessible products paired to H2 generation.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400489","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annihilation Electrochemiluminescence Triggered by Bipolar Electrochemistry 双极电化学引发的湮灭电化学发光

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400522

Leslie R. Arias-Aranda, Gerardo Salinas, Haidong Li, Conor F. Hogan, Alexander Kuhn, Laurent Bouffier, Neso Sojic

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Screening of Cation Exchange Membranes for an Anthraquinone-Ferrocyanide Flow Battery 筛选阳离子交换膜用于蒽醌-亚铁氰化物液流电池

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400516

Lavrans F. Söffker, Thomas Turek, Ulrich Kunz, Luis F. Arenas

{"title":"Screening of Cation Exchange Membranes for an Anthraquinone-Ferrocyanide Flow Battery","authors":"Lavrans F. Söffker, Thomas Turek, Ulrich Kunz, Luis F. Arenas","doi":"10.1002/celc.202400516","DOIUrl":"https://doi.org/10.1002/celc.202400516","url":null,"abstract":"The disodium salt of 9,10-anthraquinone-2,7-disulphonic acid (2,7-AQDS) is an interesting platform for developing anthraquinone derivative negolytes for aqueous organic flow batteries. Recently, ammonium sulphate supporting electrolytes have been considered for improved stability and solubility. This work advances the 2,7-AQDS/ferrocyanide flow battery with an ammonium sulphate supporting electrolyte (pH 5) by studying the suitability of six commercially available cation exchange membranes: E-620, NR-212, FS-930, F-1075-PK, F-1850 and N-115. Cell cycling under galvanostatic regime plus potential hold was performed to determine coulombic efficiency, energy efficiency and accessible capacity for each membrane as well as capacity fade rate for three selected membranes under extended operation. Cell cycling under galvanostatic control only was carried out to observe transient membrane behavior alongside accessible capacity and apparent capacity fade rate. It was found that the capacity set by the limiting negolyte is consistent with 1.5 electrons per 2,7-AQDS molecule and that energy efficiency shows a simple direct relationship to membrane thickness, with one exception. Meanwhile, four membranes displayed similar apparent capacity fade rates at this laboratory scale irrespective of their thickness, with capacity loss explained in terms of crossover. The best overall performance was attained by the thinnest membranes, E-620 and NR-212.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0